Gert Jan,
I have attached now many of the pictures, you have uploaded (you see, they don´t get lost, even your description is still there).
Very nice images and a huge amount of species!
Session timeout is/was set to 3600 seconds = 1 hour.
Maximum attachments to upload per post is/was set to 50.
So I don´t know what happend
, but you are not the first one
Everybody should upload a max of 15 to 20 attachments each post, if so, there should be no problem!
You can do a second post with the following pictures for sure
IMPORTANTDon´t use the "save" button, this will only save your text, but not your attachments in your post!
The "save"-button is only useful, if you want to write a long text and save it from time to time.
Please upload your attachments (Pictures) after and put it into your text ("place inline") before you submit your posting.
This is a not changeable presetting by the phpBB developers, sorry.
Thanks, Mario